import { login, getInfo } from '@/api/user'
import { getToken, setToken, removeToken, getLogintype, setLogintype, removeLogintype } from '@/utils/auth'
import router, { resetRouter } from '@/router'

const state = {
  token: getToken(),
  name: '',
  userinfo: {},
  roles: [],
  logintype: getLogintype()
}

const mutations = {
  SET_TOKEN: (state, token) => {
    state.token = token
  },
  SET_NAME: (state, name) => {
    state.name = name
  },
  SET_USERINFO: (state, userinfo) => {
    state.userinfo = userinfo
  },
  SET_ROLES: (state, roles) => {
    state.roles = roles
  },
  SET_LOGINTYPE: (state, type) => {
    state.logintype = type
  }
}

const actions = {
  // user login
  login({ commit }, userInfo) {
    const { logintype } = userInfo
    return new Promise((resolve, reject) => {
      login(userInfo).then(response => {
        const { token } = response
        commit('SET_TOKEN', token)
        commit('SET_LOGINTYPE', logintype)
        setToken(token)
        setLogintype(logintype)
        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  // get user info
  getInfo({ commit, state }) {
    return new Promise((resolve, reject) => {
      getInfo(state.token).then(response => {
        const { data } = response
        if (!data) {
          reject('验证失败，请重新登录')
        }

        const { usertel, username } = data
        const roles = ['admin']
        // roles must be a non-empty array
        if (!roles || roles.length <= 0) {
          reject('getInfo: roles must be a non-null array!')
        }
        commit('SET_ROLES', roles)
        commit('SET_USERINFO', data)
        commit('SET_NAME', usertel || username)
        commit('SET_LOGINTYPE', state.logintype)
        resolve(roles)
      }).catch(error => {
        reject(error)
      })
    })
  },

  // user logout
  logout({ commit, state, dispatch }) {
    return new Promise((resolve, reject) => {
      commit('SET_TOKEN', '')
      commit('SET_ROLES', [])
      commit('SET_NAME', '')
      removeToken()
      removeLogintype()
      resetRouter()

      // reset visited views and cached views
      dispatch('tagsView/delAllViews', null, { root: true })
      resolve()
    })
  },

  // remove token
  resetToken({ commit }) {
    return new Promise(resolve => {
      commit('SET_TOKEN', '')
      commit('SET_ROLES', [])
      removeToken()
      resolve()
    })
  },

  // dynamically modify permissions
  async changeRoles({ commit, dispatch }, role) {
    const token = role + '-token'
    commit('SET_TOKEN', token)
    setToken(token)

    // const { roles } = await dispatch('getInfo')
    resetRouter()

    // generate accessible routes map based on roles
    const accessRoutes = await dispatch('permission/generateRoutes', roles, { root: true })
    // dynamically add accessible routes
    router.addRoutes(accessRoutes)

    // reset visited views and cached views
    dispatch('tagsView/delAllViews', null, { root: true })
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}
